Improvement in cooking-stoves



2 Sheets-Sheet 1.

CROWLEY & CHAMBERLAIN.

Cooking Sfove.

Patented Feb. 7, 1871;

' 2 Sheets-Sheet 2.

CROWLEY & CHAMBERLAIN.

Cooking Stove.

Patented Feb. 7, 1871.

N. PETERS. PHOTO-LITHDGRAPNER. WASHINGTON. 0.0.

has cam.

B. CROWLEY- iiN-D ADDIS E. CHAMBERLAIN, OF CINCINNATI, OHIO,-

. ASSIGNORS TO CHAMBERLAIN 00., OF SAME PLACE.

Letters Patent No. 111,517, dated February 7,1871.

IMPROVEMENT IN COQKING-STOVES.

The Schedule referred to in these Letters Patent and making part of the same.

We, J OHN B. CROWLEY and Annrs E. CHAMBER- LAIN, both of the city of Cincinnati, in the county of Hamilton and State-of Ohio, have invented certain Improvements in Stoves, of which the'following is a specification.

the body and turned up, so as to expose the under side.

Figure 3isa perspective view, showing a modified form of the air-fine.

- Figure 4 is a longitudinal section of the top of the stove detached, showing the rear extension and the smoke-box attached thereto. V

Figure 5 is a perspective view of the box detached from the top.

In the drawing- A represents the body of the stove, which, in its general construction, may be the same as any one of those now-in use.

In the forward .part of the body'is the usual firechamber, G, the front side of which is formed by the vertical front plate of. the stove.

On. or against the inner side of the said front plate is a'box or chamber, F, open at both top and bottom.

Against each inner side of the body at the top, and just in rear of the fire-box, a flange, H, is made, as shown in fig. 1, so as to form a box or chamber, E, at-

each side of the stove, said chamber being open at the top.

L In the drawingthe bottom of chamber E is formed bythe top plate of the oven; but in some instances,

where the oven is difl'erently located, it will be necessary tocast a bottom in said chamber.

B represents the top plate of the stove, providcdon the under .side with suitable flanges, to fit over the upper edges of the body A, the box F, and the flanges H The top, when 'applied to the stove, closes thcupper side ofbor F and chambers E.

In each sideof the topplatc is a register, 1), which, when the topis in place, communicates with the cor-. responding chamber B, so as to admit cold air from the room into said chamber.

Under each front -corner of the top B is a flat L-' shaped plate, I, having its inner edge secured to a depending flange, K, on the under side of the top plate, as shown in figs. 2 and 4. These plates are arranged parallel with the top, but a littlebelow the same, so that an air-space, E, is left between the plate and top. When the top is applied to the body the forward ends of plates I fit againstthe ends. of box 'F, which is cut away so as to admit air from the space E over the plates. The rear ends of theplates fit in like manner-against the front ends of chambers E, so that a continuous passage ezttends from each register D, along the side and across the front of the body, tothe box F.

- The space between the outer edges of plates I and the top are closed by the vertical plates of the body, which extend up past the edges of the plates 1.

\Vhenthe registers D are opened air passes through them into chambers E, and thence along over plates I, down through .box F, and out'into the fire-chamber. As the chambers or fines through which the air thus passes are subjected to the direct action ofthe fire, the air in its. course becomes heated to a very high temperature, andis introduced into the fire-chamber in that state, thus materially aiding combustion there- 'lhe stove is, of course, I provided with the usual doors ordampei's at the front foradmitting air from the room directly to the fire; \Vhen starting the fire these doors are opened and the registers D closed; but

as soon as the stove becomes heated the doors are closed andthe registers opencdl Instead of placing the registers in the top they may be placed in the sides of the body; or, instead of using registers, the chambers E may be cast in one piece with the side of the body, as shown in fig. 3', with their outer side left open to admit air.

Besidesserving to conduct the air the plates I and flanges H protect the top plate from the direct action of the fire, so that the top is not liable to 1 hurn out or to crack from being suddenly heated or cooled, as is the case in stoves of ordinary construction.

The supplying of heated air to the fire is, we are I aware, an old idea; but byour method of construction we are enabled to'heat the air to a higher temperature than can be done byother stoves, and, at the same time, to reduce the cost of manufacturing this class of stoves.

The construction of the rear extension is as follows:

I The top plate B is made of such length as to extend a'considerable distance behind the body, and is formed with a neck,"a to receive the smoke-pipe, and also with an opening, 0, of suitable size and form, to re- .ccivc the bottom of the water-vessel.

A shallow box or pan, 0, having laterally project-- ing flanges, L and N, around its upper edges, is-also provided, as shown in fig, 5, and plaeedagainst the under sideof the extension of the top,-as shown in figs. 2 and 4.

This pan is supported in place by resting its front flanges L on the upper edge of the back of the stovebody, and passing a screw, M, through its rear edge, or a lug thereon, into the top plate, as shown in figs. 1 and 3.

An opening, J, is made through the front of box- 0, so that, when the pan is in posit-ion, this opening will communicate with the smoke-flue P of the stove, and thus the smoke and flame be carried through the box 0 in their passage from the stove, as indicated by the arrows in figs. 2 and 4.

The box or pan 0 is made of such size as to extend laterally beyond the sides of opening 0 for the Watervessel', so that, when the latter extends downward through the hole, the heat and flame will not not only upon its bottom, but also upon the sides of the vessel below the top plate, In this manner a larger heating surface is obtained, and the heat applied with more economy and advantage than usual.

Another advantage of our plan of construction is, that it permits the top plate and its pan 'tb be made flange L, resting on the vertical plates of the stovebody, substantially as described.

3. The extension-pan or plate (1, having its side flanges N,projecting laterally beyond the vertical sides of the stove, substantially as and for the purpose set forth.

JOHN B. CROWLEY. ADD'IS E. CHAMBERLAIN.

Witnesses:

M. W. OLIVER,

S. S. Momus.

2. The extension-pan or plate O, having its front. 

